The Chicago Cubs selected right-hander Javier Assad's contract from Triple-A Iowa on Tuesday, and he will make his major league debut in Game 1 of a doubleheader against the division-rival St. Louis Cardinals. Right-hander Kervin Castro was optioned to Iowa in a corresponding move. The Cubs also selected right-hander Nicholas Padilla from Iowa as the 27th man and moved outfielder Jason Heyward (knee) to the 60-day injured list. Assad, a 25-year-old right-hander, had a 2.66 ERA, 1.24 WHIP and 111...